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i8 { 19) Maxillary palpi five-jointed Gonatopus. 



19 (18) Maxillary palpi four-jointed Ncogonatopus. 



20 (17) Maxillary palpi two or three jointed. 



21 (22) Maxillary pal])i three-jointed; head not distinctly 



concave above Fachygoitafopiis. 



22 (21) Maxillary palpi two-jointed; head concave 



Epiguiiatopus. 



27, (2) Mesonotuni wide, not forming a narrow stalk, species 

 wing-ed or with rudimentary wings. 



24 ( 25 ) Front wings with a parastigma, radius complete, 



reaching the tip of the wing Lonchodrxinns. 



25 ( 24 ) Front wings without the above characters. 



26 {^7) Posterior lateral angles of the pronotum not attaining 



the tegulae. 



27 (28) ]\Iaxillary palpi very short, four-jointed; labial palpi 



two-jointed; (parapsidal furrows distinct, but fine, 

 meeting posteriorly and enclosing a narrow triangular 

 area ) Eclithrodclphax. 



28 {2y) ^Maxillary palpi long and conspicuous, often extending 



to or behind the posterior margin of the head beneath, 

 six-jointed; the labial palpi three-jointed. 



29 (30) Postscutellum extremely short, transversely linear, 



vertex of head not convex, generally more or less con- 

 cave Ncodryinus ( ?=Dryi}ins) 



30 (29) Postscutellum, well developed, usually about half as 



long as the scutellum, vertex of head convex. 



31 (32) Head posteriorly acutely wedge-shaped, its hind mar- 



gin well rounded, posterior ocelli placed far behind 

 the hind margins of the eyes Hcspcrodryinus. 



2,2 (31) Head posteriorly not acutely wedge-shaped, nor well- 

 rounded behind, but straightly transversely margined 

 or nearly so ; posterior ocelli usually almost on a line 

 with the hind margins of the eyes ( if placed behind 

 these the vertex is straightly margined posteriorly). 



2)2) (36) Chelae long, the chelar claw being well developed. 



34 (35 ) A^ertex distinctly margined posteriorly and the margin 



continued round the occiput Paradryintis. 



35 ( 34) Vertex indistinctly margined, the margins failing to- 



wards the sides CJwlorodryinus. 



36 (ZZ^ Chelae very short, the chelar claw simply a strong 



spine, with dilated base for articulation Pcrodryimis. 



37 (26) Lateral angles of pronotum attaining the tegulae. 



